直槽流动失稳过程数值模拟的可视化

Visualization of Numerical Simulations of Straight Channel Flow

本文利用计算机可视化的方法对直槽流动的数值模拟结果进行了处理,得到了若干组显示涡量场和涡管运动变化的计算机动画,通过对这些直观的动画进行分析,发现了直槽流动失稳的一些现象,对于流动稳定性的研究具有一定的参考价值。 本文所使用的可视化软件由作者自行开发,整个软件系统具有较好的通用性和扩展性,比较适合于对各种流动现象(例如涡线或流线的运动)进行二维或三维的动、静态可视化。

The data bank of direct numerical simulation of a straight channel flow was processed in this paper by means of computer visualization. A number of computer animations for vorticity field and vortex lines during the transition of a straight channel flow was illustrated. By means of the animations, the author explored a few events during the transition which are valuable in the study of flow instability. The visualization software used in this paper was developed by the first author. The software system is flexible and accessible to common use and is suitable for both stationary and animated visualization of fluid motions (e. g. vortex lines, stream lines, etc. ).